Material-handling device



Nov. 17, 1925- 1,561,866

- F. J. ILARKIN MATERIAL HANDLING DEVICE Filed Man-ch46, 1925 2 Sheets-Sheet 1 in van Z01.- Frank JL arkz'n fiiiorneya;

NOV- 17,

. I F. J. LARKIN MATERIAL HANDLING DEVICE beets-sheet 2 Filed March 16, 1925 Inventor: Frank J L arkz'n 41 torneys.

Patented Nov. 17, 1925.

UNITED STATES PATENT OFFICE.

FRANK J. LARKIN, OF CHICAGO, ILLINOIS.

MATERIALHANDLING DEVICE.

Application filed March 1c, 1925. Serial No. 16,029.

' This invention relates to a material handling device, and more particularly to a machine for discharging and distributing sand or other granular material under force.

Briefly st'ated, an important object of this invention is to provide simple means whereby the sand or the like may be discharged at a uniform rate for use in sand blasting, covering roads, or application to walls.

A further object of the invention is to provide simple means whereby the direction of discharge may be varied as the occasion requires.

A further objectof the invention isto provide a machine of the character specified which is of highly simplified Construction, durable in use, and comparatively cheap to manufacture.

Other objects and advantages will be apparent during the course of the following description In the accompanying drawings, forming a part of this application, and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a vertical sectional view through the improved machine, the view illustrating the sand hopper and ejector member in several different positions.

v Figure 2is a plan view of the improved machine, the hopper and ejector member being shown in several different positions.

Figure 3 is a vertical sectional view through a rotor embodied in the invention.

Figure 4 is a bottom planview of a lock ing member for holding the rotor in place on the shaft of the same.

Figure 5 is a plan view of a lower fastening member by means of which the rotor is securely connected to the shaft.

Figure'6 is a plan view of arotor of a modified form.

Figure 7 is a horizontal sectlonal View through the hopper, the rotor being removed.

Figure 8 is ai'vertical sectional view through the hopper, the same being. provided with the rotor illustrated in Figure 6.

In the drawings, wherein for the purpose of illustration is shown a preferredembodiment of the invention, the numeral 5 designates a hollow base or material receiver having an opening 6 by means of which sand or other granular material may be quickly introduced into the base. Referring to Figure 1, it will be seen that an endless bucket conveyor 7 dips down into the base 5 and picks up the sand or other material intro duced into the base and carries it up to a.

screened chute 10. As the sand is discharged from the buckets of the conveyor 7 it strikes a hood 11 and is by this hood directed down onto the screen 12.

The chute 12 is rocked or oscillated by a motor 14, the shaft 15 of which has its upper end provided with a crank 16. Figures 1 and 2 illustrate that the crank 16 has connection'with a link 19 which in turn is connected to a longitudinally movable crosshead 20. The intermediate portion of the cross-head 20 is rigidly connected to the chute 10 so that when the shaft 16 is rotated the chute 10 and the screen 12 carried thereby will be shaken to cause the sand to sift through the screen and pass on down through the chute 10 into a second chute 22. At this point it might be stated that the motor 12 and more particularly the shaft 15 of the same is provided with a worm 24 engaged with a worm wheel 25 mounted upon a shaft 26 which is in turn connected in any suitable manner to the endless conveyor 7 whereby the endless conveyor is caused to operate all the'time that the motor lt is in use. Figure 1 plainly illustrates that the lower end of the screen 12 .is provided with a spout 29 for the discharge of gravel or other foreign matter which is separated from the sand by the shaking action. Anysuitable means may be employed to receive the material which is discharged by way of the spout 19.

In carrying out the invention the longitudinally movable'shaft 20 is slidably carried by a pair of brackets 31 anchored or attached to the frame member or upright 33 of the endless conveyor as indicated at 34.

The second chute or sand conductor 22 is provided at its lower end with an apron 36 arranged directly above the central'portion of a rotor 37 so as to protect the centralportion of the rotor and associated. parts from the rinding effect that the discharge of the sanf directly upon the same would have.

i In other words, .the sand which passes over the apron 36 is directed into the outer portion of the hopper 40 and when it comes in contact with the radial angle blades 41 of the rotor 37 it is moved outwardly and discharged through a. spout 43. Referring now to Figure 7, it will be seen that an inlet or supply branch l ie:-;tends tangentially with respect to the hopper and communicates wi h the spout 4.3 whereby to supply sand or the like to the same, which sand is, of course, directed outwardly by centrifugal force.

The rotor 37 is provided with a central opening for the reception of a squared shaft 1-6, the upper portion of which is extended through an arm 47. while the lower end of the shaft is universally connected as indicated at 48 to a driving member 49. The driving member 4-9 has connection with a motor through tl e medium of gears 51. The arm 53 which carries the motor 50 and the shaft 54 is rotatably mounted upon a standard 66 and may by the loosening of the nut 58 be adjusted about the axis of the standard whereby to bring about the change in the position of the hopper and associated lements as illustrated in dotted lines in Figure 2.

Figure 1 illustrates that the standard M3 has connection with and supports a second chute 22.

Referring again to the rotor 67, it will be seen that the inner ends of the blades 4-1 are provided with up rardly directed lugs which are received in oppositely disposed SOCl-ZQtS ($0 of a holding collar (32. Figure 1 illustrates that the holding collar (52 is provided with a set screw (54 by means of. which it may be securely connected to the squared shaft 4-6. By reason of this airrangement the rotor 37 and more particulan ly the blades 4:1. are securely connected to the shaft -l-6 for rotation with the same.

Referring now to Figure 3 it will be seen. that the rotor 37 is provided adjacent the axis thereof with downwardly directed lugs 66 which are received in the sockets of a cup shaped bot y 68, the cup shaped body bemounted upon the shaft 66 and securely held in place by a set screw or other suitable fastening devicev Figure. 1 also illustrates that an upwardly extending curved bracket 70 is carried by the arm 53 and is provided with a slot for the reception of connecting bolts 71, the connecting bolts being carried by a bracket 72 secured to the under side of the hopper; By an adjustment of the bolt 71 in the slot of the bracket 70 the position of the hopper and associated elements may be changed.

In the modified form of invention illustrated in Figures 6 and 8, the cone shaped hopper 90 is mounted upon the squared sha t Oi and is secured thereto by longitudinal ribs 92 formed on the shaft 91.

Figure 8 illustrates that the upper end of the rotor 90 is pro *ided with acollar 93 having suit-able recesses to snugly receive the upper portion of the ribs 92 whereby to securely connect the member 90 to the shaft. The collar 96 on the lower end of the shaft 91 is also provided with suitable recesses to snugly receive the ribs 92.

The form of invention illustrated in Figures 6 and 8 is especially adapted for use in directing the sand or other material downwardly through a discharge spout 100 arranged between the rotor 90 and fed by a gradually deepening trough or groove 101. in the bottom of the hopper. This groove 101i gradually deepens toward the. spout 100 and therefor supplies a sufficient quantity of sand to the same.

In this case a battle 101i is extended over the radial spout 413 to close the same and thereby prevent the cone shaped rotor from discharging the sand through thisradial spout.

In connection with the foregoing description taken in connection with the accompanying drawing it is believed to be obvious that a machine constructed in accordance with this invention may be advantageously employed on a vehicle for discharging sand or the. like onto a road or for discharging sand onto a building joined with stucco or other wall finishing contact.

If desired, the machine may be secured to a stationary support and employed for use in sand blasting and so forth.

Having thus described my invention what is claimed is l. A. machine of the character specified comprising a hopper having a radial dis charge spout and having a tangentially arranged supply branch gradually increasing its capacity toward the spout, and a driving shaft extending through said rotor and adapted for turning the rotor, said driving shaft being universally mounted whereby the rotor and the'hopper may be adjusted about a horizontal axis, an arm having a source of power for driving said shaft, a bracket carried by said arm, a second bracket carried by said hopper, and means whereby said first and second named brackets may be adjusted to change the position of said hopper.

2. A machine of the character specified comprising a hopper having a radial dis charge spout and having a tangentially arranged supply branch gradually increasing its capacity toward the spout, and a driving shaft extending through said rotor and adapted for turning the rotor, said driving shaft being universally mounted whereby the rotor and the hopper may be adjusted about a horizontal axis, an arm having a source of power for driving said shaft, a bracket carried by said arm, a second bracket carried by said hopper, and means whereby said first and second named brackets may be adjusted with respect to each to change the position of said hopper, and a chute for supplying sand tosaid hopper.

A material handling apparatus comprising a hopper, a rotor arranged in the hopper and having radial blades provided with upwardly extending terminal portions,

and a collar having lugs snugly receiving said terminal portions, and a squared driving shaft snugly engaged by said lugs and being extended through said collar and said rotor.

at. A material handling apparatus comprising a hopper, a rotor arranged in the hopper and having radial blades provided with upwardly extending terminal portions and a collar having lugs snugly receiving said terminal portions, and a squared drivin shaft snugly engaged by said lugs and being extended through said collar and said rotor, and a second collar located beneath said'rotor and having oppositely located recesses, said rotor being provided with depending lugs received in said recesses of the second named collar.

5. A. material handling machine of the character specified comprising a hopper having a downwardly extending discharge spout and a gradually deepening groove for supplying material to said spout, and a conical rotor arranged within said hopper and having blades for supplying material to said hopper.

6. A material handling machine of the character specified comprising a hopper having a downwardly extending discharge spout and a gradually deepening groove for supplying material to said spout, a rotor arranged within said hopper, and a shaft extending through said rotor.

7. A material handling machine of the character specified comprising a hopper having a downwardly extending discharge spout and a gradually deepening groove for supplying material to said spout, a rotor arranged within said hopper, and a shaft extending through said rotor, and having longitudinal ribs, and fastening collars secured to said shaft and having recesses exceeding said ribs.

8. A material handling apparatus comprising a hollow base having material feed ing means, an endless conveyor movable through said hollow base and adapted for picking up material in the same, a chute to receive material from said endless c011- veyor, a baflie for directing materialonto the chute, said chute being provided with a screen and a discharge spout for material which does not pass through the screen, a cross head connected to said chute and having a shaft, a bracket slidably supporting said shaft, a driving member having a crank, a link connecting said shaft to said crank whereby the turning of said driving mem ber oscillates said chute, said driving member being adapted for operating said endless conveyor, and a second chute to receive the material from said first named chute.

9. A material handling apparatus comprising a hollow base having material feeding means, an endless conveyor movable through said hollow base and adapted for pickingup material in the same, a chute to receive material from said endless conveyor, a bafile for directing material onto the chute, said chute being provided with a screen and a discharge spout for material which does not pass through the screen, a cross head connected to said chute and having a shaft, a bracket slidably supporting said shaft, a driving member having a crank, a link connecting said shaft to said crank whereby the turning of said driving member oscillates said chute, said driving member being adapted for operating said endless conveyor, and a handling device to receive-the material from the second chute.

In testimony whereof I aflix my signaturer FRANK J. LARKIN. 

